Evaluation method and correction method of rock abrasiveness parameters in conglomerate formation

Abstract

An evaluation method and a correction method for rock abrasiveness parameters in conglomerate formations. The evaluation method of the rock abrasiveness parameter includes: calculating the abrasiveness parameter of the rock sample according to the logging data of the rock sample; the logging data includes density logging data, resistivity logging data, neutron pore Degree logging data, natural gamma ray logging data and acoustic logging data. The present invention utilizes density logging data, resistivity logging data, neutron porosity logging data, acoustic logging data and natural gamma logging data to directly evaluate rock abrasiveness parameters of conglomerate formations, which is easy to calculate and low in cost. It is of great significance for the selection of drill bits in conglomerate formations, high-efficiency rock-breaking drilling, and cost reduction and efficiency enhancement of drilling engineering.

Description

technical field [0001] The invention relates to the field of geological exploration, in particular to an evaluation method and a correction method of rock abrasiveness parameters in conglomerate formations. Background technique [0002] During the drilling process, the drill bits are dulled by the wear and tear of the rock and need to be replaced after a period of use. The abrasiveness parameter of the rock is an important parameter to quantitatively reflect the ability of the rock to wear the cutting teeth of the drill bit. At present, with the development of conglomerate reservoirs, especially the strong heterogeneity of deep conglomerate formations will cause the drill bit to be impacted by severe and irregular loads, and the abrasiveness of conglomerate with different gravel volume content, particle size and composition will be different. Larger, the commonly used CAI evaluation method and equivalent quartz content method are difficult to apply in conglomerate formation...

AI Technical Summary

Problems solved by technology

At present, with the development of conglomerate reservoirs, especially the strong heterogeneity of deep conglomerate formations will cause the drill bit to be impacted by severe and irregular loads, and the abrasiveness of conglomerate with different gravel volume content, particle size and composition will be different. Larger, the commonly used CAI evaluation method and equivalent quartz content method are difficult to apply in conglomerate formations, but rock abrasiveness is an important factor affecting drill bit wear, which is of great significance for bit selection, drilling parameter selection, and reducing drilling costs

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